Finding the Fourth Proportional to 22,520.34, 31,078.08 and 12,584.34

Step by Step Solution

1. Step 1: Write the proportion equation
   22,520.34 : 31,078.08 = 12,584.34 : x
2. Step 2: Convert to fraction form
   22,520.34/31,078.08 = 12,584.34/x
3. Step 3: Cross multiply
   22,520.34x = 31,078.08 × 12,584.34
4. Step 4: Simplify right side
   22,520.34x = 391,097,125.27
5. Step 5: Solve for x
   x = 391,097,125.27/22,520.34
6. Step 6: Final answer
   x = 17,366.40